A freak accident has left the protagonist trapped within an inflatable inner-tube at the bottom of a seemingly bottomless crevasse, forced to navigate upward through this claustrophobic predicament. With the cavernous walls closing in and an uncertain escape route ahead, the player must climb their way toward daylight and freedom from this unlikely prison. The journey upward becomes a test of ingenuity and persistence as they work to overcome the physical and environmental obstacles that stand between them and the surface.